Tired of signing in on multiple social sites every time? Try out TweetDeck.

It is a nice and small weight tool which merges your twitter, facebook and many other social accounts at one place. Great feature which i liked about is its 'Column Design'. Now you can see your friends tweet (All friends), Direct messages to you and their replies (Mentions) in one view.TweetDeck is in beta stages therefore lots of improvements are still awaited.